Overpeck, J. T.; Webb, T.; Prentice, I. C. (January 1985). Quantitative interpretation of fossil pollen spectra: Dissimilarity coefficients and the method of modern analogs. Quaternary Research. 23: 87–108. Bibcode:1985QuRes..23...87O. doi:10.1016/0033-5894(85)90074-2.
Overpeck, J. T.; Webb, T.; Prentice, I. C. (January 1985). Quantitative interpretation of fossil pollen spectra: Dissimilarity coefficients and the method of modern analogs. Quaternary Research. 23: 87–108. Bibcode:1985QuRes..23...87O. doi:10.1016/0033-5894(85)90074-2.